packing contents: 20pcs x (15cm x 3.5cm)‎

Product Features:‎

‎1, natural quartz added wheat rice stone, volcanic stone, zeolite and other natural low-temperature materials, high-temperature clay powder and other natural raw materials mixed, after high temperature burning, lighter materials, more pores, effective absorption of ammonia nitrogen, heavy metals and other harmful substances.‎

‎2, ultra-porous nitrification bacteria bed filter material in clean water can release a variety of minerals, trace elements, high negative ion mineral elements, to promote fish only in a more high-quality and stable environment for healthy development and growth.‎

‎3, special shape, four eight, hollow circle, simulation of nitrification bacteria growth environment and set up, increase the surface area of the filter material, conducive to the proliferation of nitrification bacteria.‎

‎4, suitable for upper drip filtration, improve the density of bioponic bacteria, breathable, permeable, do not block the condensation flow.‎